Ext.onReady(function(){
    disTopPic();// 展现顶部图片
});

// 展现顶部图片
function disTopPic(){
   var url = "findTopPic.action";
   Ext.Ajax.request({
       url:url,
       method:"post",
       async:false,
       success:function(response){
       }
       
   });
}